FICO gist

gistfile1.js

    (function () {
        //make an array of Widgets
        var widgetArray = [], //array of widgets
            widget, //widget
            w, i; //temp vars

        //widget constructor
        function Widget(name, gears, angle) {
            //assign parameters or defaults
            this.name = name || 'widget';
            this.gears = gears || 0;
            this.angle = angle || 0;
        }

        //rotate angle clockwise 90 degrees
        Widget.prototype.rotate = function () {
            this.angle = (this.angle + 90) % 360;
            return this;
        }

        //gears accessor
        Widget.prototype.getGears = function () {
            return this.gears;
        }

        //gears mutator
        Widget.prototype.setGears = function (gears) {
            this.gears = gears;
            return this;
        }

        //angle accessor
        Widget.prototype.getAngle = function () {
            return this.angle;
        }

        //angle mutator
        Widget.prototype.setAngle = function (angle) {
            this.angle = angle;
            return this;
        }

        //reset angle to 0 degrees
        Widget.prototype.resetAngle = function () {
            this.angle = 0;
            return this;
        }

        //name accessor
        Widget.prototype.getName = function () {
            return this.name;
        }

        //name mutator
        Widget.prototype.setName = function (newName) {
            this.name = newName;
            return this;
        }

        //return a new widget instance with current properties
        Widget.prototype.clone = function () {
            return (new Widget(this.name, this.gears, this.angle));
        }

        // widget.toString and log to console
        Widget.prototype.print = function () {
            console.log( this.name + " widget has " + this.gears + " gears and a " + this.angle + " degree angle " );
        }

        // add a new widget to the array
        widgetArray.push( new Widget( "first", 3, 90 ));

        //copy first widget but change its gears and rotate
        widget = widgetArray[0].clone().setGears(4).rotate();
        //add it to the array
        widgetArray.push( widget);

        //let's make just one more
        widgetArray[widgetArray.length] = widgetArray[0].clone().setName( "third").setGears(6);

        //print out some info about our widgets
        for (i = 0, len = widgetArray.length; i < len; i++) {
            w = widgetArray[i];
            w.rotate().print();
            //oops, our second gear should have its own name and no angle
            w.setName("second").setAngle(0).print();
        }
    })();